If you ever need to call someone on the other side of the planet and need to lookup time difference this is the most helpful website you’ll find. Select the country (time zone) you’re in and the country you want to lookup, and it will display the time difference beween these two locations. Quick and simple. Furthermore, it shows daylight saving changes for any combination of time zones worldwide.
Wikipedia: “Daylight saving time (DST; also summer time in British English) is the convention of advancing clocks so that afternoons have more daylight and mornings have less. Typically clocks are adjusted forward one hour near the start of spring and are adjusted backward in autumn.“
Check out Daylight Saving Time @